12results about How to "Suppress instability" patented technology

The invention discloses a power system safety and stability control method, system and device and a medium, and the method comprises the steps: firstly, analyzing the output characteristics of new energy, and constructing a power system safety and stability control index; secondly, a safety and stability control model is established by taking a safety and stability control index and a minimum load shedding amount as targets and taking an operation risk as a constraint; secondly, improving links of contraction surrounding preys and spiral bubble net attack in the whale algorithm; and finally, solving the safety stability control model by using the improved whale algorithm, and realizing the generation of the low-frequency load shedding strategy after the fault. According to the method, instability and potential safety hazards of the power system caused by new energy output fluctuation are inhibited, and generation of the low-frequency load shedding strategy when the power system encounters a fault or new energy fluctuation is ensured, so that the safety and stability of the power system are ensured.

The invention provides a crystal pulling process control method, a single crystal silicon rod process control device and a crystal pulling system.The method comprises the steps that a multi-physical-field coupling numerical model of a silicon melt in a single crystal furnace is constructed and used for reflecting the coupling relation among a pulsating velocity field, a temperature field and an electromagnetic field in the silicon melt; according to a preset simulation method and the multi-physics field coupling numerical model, a plurality of characteristic parameters corresponding to the silicon melt under a plurality of process conditions and a plurality of magnetic field structure parameters are generated, and the characteristic parameters are used for representing melt flow characteristics; and determining a target process condition and a target magnetic field structure parameter according to the plurality of characteristic parameters, the plurality of process conditions and the plurality of magnetic field structure parameters, and controlling the single crystal furnace to perform a crystal pulling process under the target process condition and the target magnetic field structure parameter. According to the method, the problem that the crystal quality cannot be guaranteed due to a czochralski method silicon single crystal rod growth process in the prior art is solved.

The electrodeposition dispersion of the present invention is an electrodeposition dispersion for electrodepositing an electrodeposited film on a conductive base material, the solution including water, a dispersion medium, and a solid component, in which the solid component includes a polyimide-based resin and a fluorine-based resin, the fluorine-based resin content included in the solid component is in a range of 72 mass% or more and 95 mass% or less, an average particle diameter of the solid component dispersed in the water and the dispersion medium is 50 nm or more and 500 nm or less, and a standard deviation of the particle diameter of the solid component is 250 nm or less.

This invention discloses a digital isolator circuit with additional delay, including a transmitter circuit that receives a data input signal and generates first and second transmitter output signals, wherein the second transmitter output signal is a delayed version of the first transmitter output signal. Subsequently, an isolation barrier generates the first and second isolation output signals, causing a receiver circuit to generate a data output signal in response to these isolation output signals. By further incorporating a delay circuit in the transmitter circuit to delay the first transmitter output signal and generate the second transmitter output signal, this invention effectively enhances the received signal at the receiver circuit, maintaining the stability of the common-mode signal and the robustness of data transmission. A pulse carrier modulation mechanism is also employed to effectively reduce power consumption, electromagnetic interference, and signal jitter.

The invention relates to the field of lithium iron phosphate, in particular to a composite solid electrolyte synergistically modified lithium iron phosphate positive electrode material and a preparation method thereof. The preparation method is used for solving the problems that existing lithium iron phosphate is poor in electronic conductivity, high in interface impedance and poor and low in interface stability. The lithium iron phosphate positive electrode material synergistically modified by the composite solid electrolyte comprises COF / neodymium-doped lithium titanium aluminum phosphate modified lithium iron phosphate, acetylene carbon black, polyethylene glycol and N-methyl pyrrolidone, according to the preparation method, firstly, lithium iron phosphate is prepared, neodymium ions are doped in the process of preparing lithium titanium aluminum phosphate to serve as a first modification layer, cyanophenothiazine COF is synthesized to serve as a second modification layer, two layers of solid electrolyte are modified on the surface of the lithium iron phosphate to achieve a synergistic effect to form a protective film, and formation of lithium dendrites can be effectively reduced; the interface stability and the cycle performance of the material are remarkably improved, and the safety of the battery is enhanced.

The present invention relates to a composite coated lithium ion battery positive electrode material and a preparation method and application thereof. The composite coated lithium ion battery positive electrode material of the present invention comprises a positive electrode active material core and a composite coating layer coated on the surface of the positive electrode active material core, wherein the composite coating layer comprises a conductive polymer and an inorganic oxide, the inorganic oxide is distributed in a dotted manner on the surface of the positive electrode active material core, and the inorganic oxide distributed in a dotted manner is dispersed in the conductive polymer matrix, extending from the surface of the positive electrode active material core to the surface of the composite coating layer. The composite coated lithium ion battery positive electrode material of the present invention can ensure the electron and ion transmission performance of the lithium ion battery positive electrode material, thereby ensuring the battery capacity.

The present application relates to the technical field of controllable nuclear fusion, and particularly relates to a device for controlling energy confinement time by using a limiter bias system. The device comprises a bias electrode head, a soft connection wire connected with the bias electrode head at one end and connected with a bias power supply system of an NCST spherical tokamak device at the other end, and a limiter main body installed on one side of the NCST spherical tokamak device and provided with the bias electrode head for restraining the escaped electrons generated by discharge of the NCST spherical tokamak device. The present application can restrain the escaped electrons generated by discharge of the NCST spherical tokamak device by installing the limiter bias system, improve the energy confinement time parameter of the NCST spherical tokamak device, significantly restrain the plasma instability, and thus increase the plasma current duration and improve the plasma current size.

A processing head 35 is moved to a corner portion A along a first side L1 without decelerating while emitting a laser beam; emission of the laser beam is stopped after the processing head 35 which is moving reaches the corner portion A; the processing head 35 is moved from the corner portion A to a first predetermined position D separated by a first predetermined distance D1 along a second side L2 while emitting the laser beam intermittently, and emission of the laser beam is stopped when the processing head reaches the first predetermined position D; the processing head 35 is accelerated from a position E, which is on an extension line of the second side L2 and before the corner portion A, toward the corner portion A; and emission of the laser beam is started when the processing head 35 which is accelerating reaches the corner portion A, and then the processing head 35 is moved along the second side L2.

The invention provides an air conditioner air outlet assembly and an air conditioner, and relates to the technical field of air conditioners, the air conditioner air outlet assembly comprises a cross-flow fan blade, a volute back plate and a volute tongue, and the cross-flow fan blade comprises a plurality of fan blade bodies which are sequentially spliced in the axis direction; an air outlet channel extending to the cross-flow fan blade is formed between the volute tongue and the volute back plate; wherein the volute tongue extends in the axis direction, the end of each fan blade body is used for being connected with the adjacent fan blade body, and the width of a gap between the middle of each fan blade body and the volute tongue is larger than that of a gap between the end of each fan blade body and the volute tongue. Compared with the prior art, the air conditioner air outlet assembly provided by the invention has the advantages that the gap between the fan blade body and the volute tongue can be reduced near the end part of the fan blade body, so that the backflow phenomenon at the gap is inhibited, the air flow entering the cross-flow fan blade is more stable, the unstable condition of the circulating vortex is inhibited, the air flow fluctuation is avoided, and the air supply noise is reduced.

This invention discloses the application of an inhibitor of the BEX4-XRCC5 interaction in the preparation of an anti-hepatoblastoma drug, belonging to the field of biomedical technology. The inhibitor, F35-303, specifically disrupts the direct interaction between BEX4 and XRCC5 proteins, inhibiting the DNA non-homologous end joining repair pathway, thereby targeting hepatoblastoma tumor stem cells and overcoming the limitations of existing therapies. It is particularly suitable for treating platinum-resistant or recurrent hepatoblastoma. The inhibitor is a small molecule compound named F35-303. This invention also provides pharmaceutical compositions containing this inhibitor and their combination therapy with platinum-based chemotherapy drugs (such as cisplatin), which can synergistically enhance efficacy and reduce toxic side effects. This invention provides a novel targeted therapy strategy for hepatoblastoma.

The application provides a parameter extraction and alignment processing method and system for DLCP test data, which comprises the following steps: DLCP tests are carried out at multiple different test frequencies to obtain the capacitance bias curve data corresponding to each test frequency; the validity of the capacitance bias curve data is determined, and each curve data determined as valid is subjected to function fitting, and the capacitance parameters corresponding to each test frequency are extracted from the fitting results; based on the capacitance parameters, the spatial position parameters corresponding to each test frequency are calculated through a first model; the spatial position parameters corresponding to a preset high frequency are taken as a reference for alignment processing, and a multi-frequency data set in a unified depletion region width coordinate system is output; the trap density distribution is obtained by performing multi-frequency capacitance data difference calculation, and trap density spatial distribution data is output. Through the spatial alignment processing of the capacitance bias data at different test frequencies based on a unified physical model, the accuracy and stability of the test results are improved.

The present application provides a crystal pulling process control method, a single crystal silicon rod process control device and a crystal pulling system, the method comprising: constructing a multi-physical field coupling numerical model of silicon melt in a single crystal furnace, used to reflect the coupling relationship between the pulsating velocity field, temperature field and electromagnetic field inside the silicon melt; generating multiple characteristic parameters corresponding to the silicon melt under multiple process conditions and multiple magnetic field structure parameters according to a preset simulation method and the multi-physical field coupling numerical model, wherein the characteristic parameters are used to characterize the melt flow characteristics; determining target process conditions and target magnetic field structure parameters according to multiple characteristic parameters, multiple process conditions and multiple magnetic field structure parameters, and controlling the single crystal furnace to perform a crystal pulling process under the target process conditions and the target magnetic field structure parameters. The above method solves the problem in the prior art that the quality of the crystal cannot be guaranteed due to the Czochralski single crystal silicon rod growth process.